when anyone who knows what it costs to ship a chip sees a $3.50 or $4 ship charge. Not every buyer is looking to purchase multiple auction items from the same Seller to be able to take advantage of combined shipping and would have to pay the high freight fee for a single auction. The only way to make it worthwhile is to bid on more than one of your auctions. When I see an auction with inflated shipping fees it makes me feel like the seller is looking for an additional source of profit and I go on to the next item.

Mark says it the best:

EBAY CREDO – MARK ENGLEBRETSON

(excerpt)

I believe it is my responsibility to charge you what the carrier charges me to ship. I
believe repeat customers get free shipping. They deserve it. I believe ad fees, bubble
wrap, peanuts, envelopes are a cost of doing business. If the stuff you are selling
doesn't provide a great enough profit to cover those items you should probably be
doing something else.